Unconventional Single-Molecule Conductance Behavior for a New Heterocyclic Anchoring Group: Pyrazolyl

The Journal of Physical Chemistry Letters
I Lucia HerrerPilar Cea

Abstract

Electrical conductance across a molecular junction is strongly determined by the anchoring group of the molecule. Here we highlight the unusual behavior of 1,4-bis(1H-pyrazol-4-ylethynyl)benzene that exhibits unconventional junction current versus junction-stretching distance curves, which are peak-shaped and feature two conducting states of 2.3 × 10-4 G0 and 3.4 × 10-4 G0. A combination of theory and experiments is used to understand the conductance of single-molecule junctions featuring this new anchoring group, i.e., pyrazolyl. These results demonstrate that the pyrazolyl moiety changes its protonation state and contact binding during junction evolution and that it also binds in either end-on or facial geometries with gold contacts. The pyrazolyl moiety holds general interest as a contacting group, because this linkage leads to a strong double anchoring of the molecule to the gold electrode, resulting in enhanced conductance values.

References

Sep 19, 2002·Journal of the American Chemical Society·Jeremy M BeebeC Daniel Frisbie
Jun 10, 2003·Chemistry : a European Journal·Nathalie KatsonisMax Malacria
Jul 21, 2006·The Journal of Physical Chemistry. B·Alexei V TivanskiDavid H Waldeck
Jul 21, 2006·The Journal of Physical Chemistry. B·Jason D MonnellPaul S Weiss
Oct 10, 2006·Chemical Communications : Chem Comm·Carmen AtienzaDirk M Guldi
Dec 7, 2007·Journal of the American Chemical Society·Young S ParkLatha Venkataraman
Jan 1, 2008·Journal of the American Chemical Society·Roman HuberMichel Calame
Sep 19, 2008·Accounts of Chemical Research·Alina K FeldmanColin Nuckolls
Apr 8, 2009·Nature Nanotechnology·Su Ying QuekLatha Venkataraman
Dec 17, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Emel AdaligilKrzysztof Slowinski
Dec 22, 2009·Journal of the American Chemical Society·Chih-Hung KoChun-Hsien Chen
Apr 29, 2010·Journal of the American Chemical Society·M KamenetskaL Venkataraman
May 4, 2010·Journal of the American Chemical Society·Yangjun XingEric Borguet
May 8, 2010·Physical Chemistry Chemical Physics : PCCP·Richard J NicholsDonald Bethell
Jun 12, 2010·Journal of the American Chemical Society·Santiago MartínRichard J Nichols
Jun 22, 2010·Nature Nanotechnology·Florian von WrochemJurina M Wessels
Dec 16, 2010·Journal of the American Chemical Society·Artem MishchenkoThomas Wandlowski
Mar 30, 2011·Journal of the American Chemical Society·Deqing GaoFlorian von Wrochem
May 27, 2011·Accounts of Chemical Research·Pawilai ChinwangsoT Randall Lee
Jul 8, 2011·Chemical Communications : Chem Comm·Sonja KuhnOlaf Magnussen
Aug 3, 2011·Journal of the American Chemical Society·Carlos R ArroyoNicolás Agraït
Jan 1, 2005·Topics in Current Chemistry·Dustin K James, James M Tour
Feb 23, 2012·Journal of the American Chemical Society·Rebekka S KlausenColin Nuckolls
May 23, 2012·Nature Chemistry·Hannu Häkkinen
Sep 26, 2012·Physical Review Letters·C SabaterM J Caturla
Jan 23, 2013·Physical Chemistry Chemical Physics : PCCP·Fabian SanderMichael Zharnikov
Feb 7, 2013·Angewandte Chemie·Carlos R ArroyoHerre S J van der Zant
Mar 1, 2013·Chemistry : a European Journal·Luz Marina BallesterosPilar Cea
Apr 11, 2013·Chemical Society Reviews·Chuancheng Jia, Xuefeng Guo
Apr 26, 2013·Chemical Communications : Chem Comm·Ryota SakamotoHiroshi Nishihara
Jun 6, 2013·Nature Nanotechnology·Mark Ratner
Jun 6, 2013·Nature Nanotechnology·Sriharsha V Aradhya, Latha Venkataraman
Jul 24, 2013·Journal of the American Chemical Society·Pavel Moreno-GarcíaThomas Wandlowski
Jul 24, 2013·Physical Chemistry Chemical Physics : PCCP·Satoshi KatanoMaki Kawai
Oct 1, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·S CasaliniF Biscarini
Nov 27, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Zhongming WeiBo W Laursen
Jun 7, 2015·Annual Review of Analytical Chemistry·Richard J Nichols, Simon J Higgins
Jul 2, 2015·Physical Chemistry Chemical Physics : PCCP·Sílvia C CoelhoGalya Ivanova

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Citations

May 21, 2020·Nanoscale Horizons : the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy·Ali K Ismael, Colin J Lambert
Oct 10, 2020·Chemical Science·Ali IsmaelColin J Lambert
Feb 13, 2021·Journal of the American Chemical Society·Hongliang ChenJ Fraser Stoddart
Nov 17, 2020·Frontiers in Chemistry·Qiushuang AiFeng Liang
Jun 11, 2021·Nanoscale·Luke J O'Driscoll, Martin R Bryce
Nov 3, 2020·Journal of the American Chemical Society·Yongxiang TangWenjing Hong
Jan 7, 2021·The Journal of Physical Chemistry Letters·Ya-Hao WangXiao-Shun Zhou

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